Switching Photoluminescence Wavelength of Arylated Single-walled Carbon Nanotubes by Utilizing Steric Hindrance in Reductive Arylation.

ABSTRACT: (6,5)-enriched single-walled carbon nanotubes (SWCNTs) were reductively arylated using sodium naphthalenide and monosubstituted and disubstituted iodobenzene derivatives to control their photoluminescence (PL) properties. In the reactions with substituted iodobenzenes, the degree of functionalization was influenced by the substituents on the aryl groups depending on their position, which allowed us to realize control of the PL intensity and wavelength. The methyl or methoxy group at the 2-position and methyl groups at the 3,5-positions of the phenyl group respectively increased the E₁₁** PL and E₁₁* PL selectivity at ~1230 and ~1100 nm. Methyl groups at the 2,6-positions emerged two new PL peaks. These PL characteristics were prominently observed in the (6,4) SWCNT ad

SUBMITTER: Maeda Y 

PROVIDER: S-EPMC11874903 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature